Table 5. Accuracy evaluation of urban functional area.

Functional area number	Real attributes	Identified attributes	Accuracy score
1	Industrial	Industrial	3
2	C&B, S&E	C&B, S&E	3
3	Science and Education	Science and Education	3
4	Administration and Public services	Administration and Public services	3
5	C&B, Green space	C&B, Green space	3
6	Comprehensive functional	Residential	1
7	Science and Education	C&B, S&E	2
8	Science and Education	C&B, S&E	2
9	Residential	Residential	3
10	A&P, Residential	A&P, Residential	3
11	Green space	A&P, Residential	0
12	Comprehensive functional	Comprehensive functional	3
13	C&B, Industrial	C&B, Industrial	3
14	C&B, Green space	Commercial and Business facilities	2
15	Green space	Green space	3
16	Industrial	Industrial	3
17	Comprehensive functional	Comprehensive functional	3
18	C&B, Residential	C&B, Residential	3
19	Administration and Public services	Administration and Public services	3
20	C&B, Residential	C&B, Residential	3
21	C&B, S&E	C&B, A&P	2
22	C&B, Green space	Commercial and Business facilities	2
23	A&P, Industrial	A&P, S&E	2
24	C&B, Industrial	Commercial and Business facilities	2
25	Comprehensive functional	Comprehensive functional	3
26	C&B, Residential	C&B, Residential	3
27	Comprehensive functional	Comprehensive functional	3
28	C&B, Residential	C&B, Residential	3
29	Comprehensive functional	C&B, A&P	2
30	Comprehensive functional	Science and Education	1
31	C&B, Industrial	C&B, A&P	2
32	Comprehensive functional	Commercial and Business facilities	1
33	C&B, A&P	C&B, A&P	3
34	A&P, Green space	C&B, A&P	2
35	Commercial and Business facilities	Commercial and Business facilities	3
36	C&B, S&E	C&B, S&E	3
37	A&P, Green space	A&P, Green space	3
38	C&B, S&E	C&B, S&E	3
39	C&B, Industrial	C&B, Industrial	3
40	S&E, Green space	C&B, Residential	0